Post by DinosaurMichael on Jun 29, 2012 9:41:33 GMT -5
Bengal Tiger - Panthera tigris tigris
The Bengal tiger (Panthera tigris tigris) is a tiger subspecies native to the Indian subcontinent that in 2010 has been classified as endangered by IUCN. The total population is estimated at fewer than 2,500 individuals with a decreasing trend, and none of the Tiger Conservation Landscapes within the Bengal tiger's range is large enough to support an effective population size of 250 adult individuals. The Bengal tiger is the most numerous tiger subspecies with populations estimated at 1,520–1,909 in India, 440 in Bangladesh, 124–229 in Nepal and 67–81 in Bhutan. Bengal is traditionally fixed as the typical locality for the binomial Panthera tigris, to which the British taxonomist Reginald Innes Pocock subordinated the Bengal tiger in 1929 under the trinomial Panthera tigris tigris. The Bengal tiger's coat is yellow to light orange, with stripes ranging from dark brown to black; the belly and the interior parts of the limbs is white, and the tail is white with black rings. Male Bengal tigers had a total length, including the tail, from 270 to 310 cm (110 to 120 in), while females range from 240 to 265 cm (94 to 104 in). Tails are 85 to 110 cm (33 to 43 in) long, and height at the shoulders is 90 to 110 cm (35 to 43 in). The head and body length of three males captured in Nagarahole National Park ranged from 189 to 204 cm (74 to 80 in), with a tail length of 100 to 107 cm (39 to 42 in), while a single female measured 161 cm (63 in), with a tail length of 87 cm (34 in). The average weight of males is 221.2 kg (488 lb), while that of females is 139.7 kg (308 lb). Males captured in Chitwan National Park in the early 1970s had an average weight of 235 kg (520 lb) ranging from 200 to 261 kg (440 to 580 lb), and that of the females was 140 kg (310 lb) ranging from 116 to 164 kg (260 to 360 lb). Males from the northern India are as large as Siberian tigers with a greatest length of skull of 332 to 376 mm (13.1 to 14.8 in). The tiger in India has no definite mating and birth seasons. Most young are born in December and April. Young have also been found in March, May, October and November. In the 1960s, certain aspects of tiger behaviour at Kanha National Park indicated that the peak of sexual activity was from November to about February, with some mating probably occurring throughout the year.
Siberian Tiger - Panthera tigris altaica
The Siberian tiger (Panthera tigris altaica), also known as the Amur tiger, is a tiger subspecies inhabiting mainly the Sikhote Alin mountain region with a small subpopulation in southwest Primorye province in the Russian Far East. In 2005, there were 331–393 adult-subadult Amur tigers in this region, with a breeding adult population of about 250 individuals. The population has been stable for more than a decade due to intensive conservation efforts, but partial surveys conducted after 2005 indicate that the Russian tiger population is declining. The Siberian tiger is the largest living felid and ranks among the biggest felids that ever existed. Phylogeographic analysis with extant tiger subspecies suggests that less than 10,000 years ago the ancestor of Amur and Caspian tigers colonized Central Asia via the Gansu−Silk Road corridor from eastern China then subsequently traversed Siberia eastward to establish the Amur tiger population in the Russian Far East. The Siberian tiger is reddish-rusty or rusty-yellow in colour, with narrow black transverse stripes. The body length is not less than 150 cm (59 in), condylobasal length of skull 250 mm (9.8 in), zygomatic width 180 mm (7.1 in), and length of upper carnassial tooth over 26 mm (1.0 in) long. It has an extended supple body standing on rather short legs with a fairly long tail. It is typically 5–10 cm (2.0–3.9 in) taller than the Bengal tiger, which is about 107–110 cm (42–43 in) tall. Measurements taken by scientists of the Siberian Tiger Project in Sikhote-Alin range from 178 to 208 cm (70 to 82 in) in head and body length measured in straight line, with an average of 195 cm (77 in) for males; and for females ranging from 167 to 182 cm (66 to 72 in) with an average of 174 cm (69 in). The average tail measures 99 cm (39 in) in males and 91 cm (36 in) in females. The longest male "Maurice" measured 309 cm (122 in) in total length (tail of 101 cm (40 in)) and had a chest girth of 127 cm (50 in). The longest female "Maria Ivanna" measured 270 cm (110 in) in total length (tail of 88 cm (35 in)) and had a chest girth of 108 cm (43 in). These measurements show that the present Amur tiger is longer than the Bengal tiger and the African lion. According to modern research of wild Siberian tigers in Sikhote-Alin, an average adult male of more than 35 months of age weighs 176.4 kg (389 lb), the average asymptotic limit being 222.3 kg (490 lb); an adult tigress weighs 117.9 kg (260 lb). The mean weight of historical Siberian tigers is supposed to be higher: 215.3 kg (475 lb) for male tigers and 137.5 kg (303 lb) for females. In May 2011, a male called "Banzai" weighing 207 kg (460 lb) was radio-collared. This individual is heavier but smaller in size than a previously radio-collared male. Measurements of more than fifty captured individuals suggest that body size is similar to that of Bengal tigers. The largest male, with largely assured references, measured 350 cm (140 in) "over curves", equivalent to 330 cm (130 in) between pegs. The tail length in fully grown males is about 1 m (39 in). Weights of up to 318 kg (700 lb) have been recorded and exceptionally large males weighing up to 384 kg (850 lb) are mentioned in the literature but, according to Mazák, none of these cases can be confirmed via reliable sources.
The Bengal tiger (Panthera tigris tigris) is a tiger subspecies native to the Indian subcontinent that in 2010 has been classified as endangered by IUCN. The total population is estimated at fewer than 2,500 individuals with a decreasing trend, and none of the Tiger Conservation Landscapes within the Bengal tiger's range is large enough to support an effective population size of 250 adult individuals. The Bengal tiger is the most numerous tiger subspecies with populations estimated at 1,520–1,909 in India, 440 in Bangladesh, 124–229 in Nepal and 67–81 in Bhutan. Bengal is traditionally fixed as the typical locality for the binomial Panthera tigris, to which the British taxonomist Reginald Innes Pocock subordinated the Bengal tiger in 1929 under the trinomial Panthera tigris tigris. The Bengal tiger's coat is yellow to light orange, with stripes ranging from dark brown to black; the belly and the interior parts of the limbs is white, and the tail is white with black rings. Male Bengal tigers had a total length, including the tail, from 270 to 310 cm (110 to 120 in), while females range from 240 to 265 cm (94 to 104 in). Tails are 85 to 110 cm (33 to 43 in) long, and height at the shoulders is 90 to 110 cm (35 to 43 in). The head and body length of three males captured in Nagarahole National Park ranged from 189 to 204 cm (74 to 80 in), with a tail length of 100 to 107 cm (39 to 42 in), while a single female measured 161 cm (63 in), with a tail length of 87 cm (34 in). The average weight of males is 221.2 kg (488 lb), while that of females is 139.7 kg (308 lb). Males captured in Chitwan National Park in the early 1970s had an average weight of 235 kg (520 lb) ranging from 200 to 261 kg (440 to 580 lb), and that of the females was 140 kg (310 lb) ranging from 116 to 164 kg (260 to 360 lb). Males from the northern India are as large as Siberian tigers with a greatest length of skull of 332 to 376 mm (13.1 to 14.8 in). The tiger in India has no definite mating and birth seasons. Most young are born in December and April. Young have also been found in March, May, October and November. In the 1960s, certain aspects of tiger behaviour at Kanha National Park indicated that the peak of sexual activity was from November to about February, with some mating probably occurring throughout the year.
Siberian Tiger - Panthera tigris altaica
The Siberian tiger (Panthera tigris altaica), also known as the Amur tiger, is a tiger subspecies inhabiting mainly the Sikhote Alin mountain region with a small subpopulation in southwest Primorye province in the Russian Far East. In 2005, there were 331–393 adult-subadult Amur tigers in this region, with a breeding adult population of about 250 individuals. The population has been stable for more than a decade due to intensive conservation efforts, but partial surveys conducted after 2005 indicate that the Russian tiger population is declining. The Siberian tiger is the largest living felid and ranks among the biggest felids that ever existed. Phylogeographic analysis with extant tiger subspecies suggests that less than 10,000 years ago the ancestor of Amur and Caspian tigers colonized Central Asia via the Gansu−Silk Road corridor from eastern China then subsequently traversed Siberia eastward to establish the Amur tiger population in the Russian Far East. The Siberian tiger is reddish-rusty or rusty-yellow in colour, with narrow black transverse stripes. The body length is not less than 150 cm (59 in), condylobasal length of skull 250 mm (9.8 in), zygomatic width 180 mm (7.1 in), and length of upper carnassial tooth over 26 mm (1.0 in) long. It has an extended supple body standing on rather short legs with a fairly long tail. It is typically 5–10 cm (2.0–3.9 in) taller than the Bengal tiger, which is about 107–110 cm (42–43 in) tall. Measurements taken by scientists of the Siberian Tiger Project in Sikhote-Alin range from 178 to 208 cm (70 to 82 in) in head and body length measured in straight line, with an average of 195 cm (77 in) for males; and for females ranging from 167 to 182 cm (66 to 72 in) with an average of 174 cm (69 in). The average tail measures 99 cm (39 in) in males and 91 cm (36 in) in females. The longest male "Maurice" measured 309 cm (122 in) in total length (tail of 101 cm (40 in)) and had a chest girth of 127 cm (50 in). The longest female "Maria Ivanna" measured 270 cm (110 in) in total length (tail of 88 cm (35 in)) and had a chest girth of 108 cm (43 in). These measurements show that the present Amur tiger is longer than the Bengal tiger and the African lion. According to modern research of wild Siberian tigers in Sikhote-Alin, an average adult male of more than 35 months of age weighs 176.4 kg (389 lb), the average asymptotic limit being 222.3 kg (490 lb); an adult tigress weighs 117.9 kg (260 lb). The mean weight of historical Siberian tigers is supposed to be higher: 215.3 kg (475 lb) for male tigers and 137.5 kg (303 lb) for females. In May 2011, a male called "Banzai" weighing 207 kg (460 lb) was radio-collared. This individual is heavier but smaller in size than a previously radio-collared male. Measurements of more than fifty captured individuals suggest that body size is similar to that of Bengal tigers. The largest male, with largely assured references, measured 350 cm (140 in) "over curves", equivalent to 330 cm (130 in) between pegs. The tail length in fully grown males is about 1 m (39 in). Weights of up to 318 kg (700 lb) have been recorded and exceptionally large males weighing up to 384 kg (850 lb) are mentioned in the literature but, according to Mazák, none of these cases can be confirmed via reliable sources.
